Probably the best free task manager I've ever used. I love the reminder feature, and the fact that you can customize nearly everything. It is really simple to use - you can just drag stuff around with mouse (to reorganize tasks in your todo list, for example). Other programs usually don't have the ability to reorder the task list the way you want. Also, it has many icons that you can use for your lists which is cool. Another thing I love is that it can maintain not just tasks and reminders but also memos, right in the tree - so it can work just like TreePad or other programs like that. Really neat and complete program, definitely not like many other half-baked free apps.
Price: Free review details